At present you have the rules of the game and the helmets and padding, which encourage concussions, and they you put another device on top of that, in order to

At present you have the rules of the game and the helmets and padding, which encourage concussions, and they you put another device on top of that, in order to limit them. That doesn't sound as if it would lead anywhere, and past experience has shown that the evolutionary path the game has taken did nothing to improve safety, Better helmets have made the concussion problem worse. I'm not comfortable with this approach, it would be better to discourage hard hits altogether instead of limiting them with a g-meter.